Strike Industries SPBUS Strike Polymer Backup Sights Black Folding for AR-15

The Strike Polymer Backup Sights (SPBUS) is a low-profile affordable sighting system designed for the AR platform featuring bonus built-in backup sights when flipped down. Constructed from lightweight, durable SI Polymer Extreme material with a steel mounting tab and insert. The rear sight offers two apertures for different shooting scenarios, with tool-less windage adjustments and tool-less front elevation. It mounts easily to any 1913 Picatinny rail and features a manual flip deployment to prevent accidental opening. Designed to provide reliable, low-profile, multi-function backup sights at a budget-friendly price.